salesforce apex class call exteral webservice

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在项目中需要调用外面的Webservice, 从Salesforce往外写入其他系统。目前一般有两种方法。

1. 根据对方提供的wsdl文件生成apex class，直接实例化后调用其方法（测试成功)，包括Java 和 .Net不同的平台提供的wsdl文件。

2.直接用HttpRequest去调用webservice.

下面就是参考这位朋友的博客，测试成功的案例。

http://www.cnblogs.com/yqskj/archive/2013/04/25/3041781.html

  HttpRequest req = new HttpRequest();

         //Set HTTPRequest Method

         req.setMethod('POST');

         req.setEndpoint('https://api.authorize.net/soap/v1/Service.asmx');

         req.setMethod('POST');

         req.setHeader('Content-Type', 'text/xml; charset=utf-8');

         req.setHeader('SOAPAction', 'https://api.authorize.net/soap/v1/CreateCustomerProfile');//

         string b =   '<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">'+

                       '<soap:Body><CreateCustomerProfile xmlns="https://api.authorize.net/soap/v1/">'+

                       '<merchantAuthentication><name>Merchant name here</name>'+

                       '<transactionKey>Transaction Key here</transactionKey></merchantAuthentication>'+

 '<profile><description>description</description>'+

                       '<email>sforce2009@gmail.com</email>'+

                       '<paymentProfiles>'+

                       '<CustomerPaymentProfileType><customerType>individual</customerType>'+

 '<payment><creditCard><cardNumber>6011000000000012</cardNumber>'+

                       '<expirationDate>2009-12</expirationDate></creditCard>'+

                       '</payment></CustomerPaymentProfileType></paymentProfiles></profile>'+

                       '</CreateCustomerProfile></soap:Body></soap:Envelope>';

         req.setBody(b);

         Http http = new Http();

         try {

           //Execute web service call here

           HTTPResponse res = http.send(req);

           //Helpful debug messages

           System.debug(res.toString());

           System.debug('STATUS:'+res.getStatus());

           System.debug('STATUS_CODE:'+res.getStatusCode());

         //YOU CAN ALWAYS PARSE THE RESPONSE XML USING XmlStreamReader  CLASS

        } catch(System.CalloutException e) {

             //Exception handling goes here....

      }